{
  "manageEntity": {
    "action": "Save",
    "entityId": "792813290",
    "entityType": "Track",
    "nonce": "0xfd3180bb8fe7cef69a314e79815b15c5dbe2f599d63fac439616e5d07007469a",
    "signature": "0x712746666d30c6bef70aafaaeb14c206a3e1c1add47c57bf6d52b4afd464df187f7b33437a8844fbde511b12bab613a561b2ef0f9bab9f900d6fc2c64a04852b1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}